Linux not adhering to BIOS Drive boot order?
Quoted 6 lines · Tim Fletcher
Quoted 3 lines
How does MD/RAID0 know which array should be
/dev/md0? What if you had a second array on/dev/hdband/dev/hdd, would that become/dev/md0(assuming it had a kernel/boot sector)?
/etc/raidtabspecifies which drives belong in which array, but I only have
hda and hdc so I can't really answer the question
What happens if /dev/md0 is /dev/sda and /dev/sdc ( the system also has sdb )
and sda fails or is removed ?
the old sdb will now be sda and old-sdc will be sdb.
md0 will look into sda , which is now the non-md disk , and sdc , which doesn't exists any more ???
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David Balazic -------------- "Be excellent to each other." - Bill & Ted - - - - - - - - - - - - - - - - - - - - - - - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] Please read the FAQ at http://www.tux.org/lkml/
Quoted 7 lines
Quoted 6 lines
Quoted 3 lines
How does MD/RAID0 know which array should be
/dev/md0? What if you had a second array on/dev/hdband/dev/hdd, would that become/dev/md0(assuming it had a kernel/boot sector)?
/etc/raidtabspecifies which drives belong in which array, but I only have
hda and hdc so I can't really answer the question
Quoted 6 lines
What happens if
/dev/md0is/dev/sdaand/dev/sdc( the system also has sdb )
and sda fails or is removed ?
the old sdb will now be sda and old-sdc will be sdb.
md0 will look into sda , which is now the non-md disk , and sdc , which doesn't exists any more ???
This is when devfs comes into its own, as the disks are refered to by their device/controller id not by the /dev/sd{a,b,c,etc} numbering, hence when one fails the others don't change. Also I think the kernel autodetect code for scsi devices will deal with this case, but I'm not sure.
Signature · 14 lines
Tim Fletcher - Network manager .~.
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Please read the FAQ at http://www.tux.org/lkml/Quoted 4 lines · Tim Fletcher
This is when devfs comes into its own, as the disks are refered to by their device/controller id not by the
/dev/sd{a,b,c,etc}numbering, hence when one fails the others don't change. Also I think the kernel autodetect code for scsi devices will deal with this case, but I'm not sure.
'would be great to use driver name, e.g. something like /dev/scsi/advansys/... (I don't remember devfs naming scheme)
Xav
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Quoted 7 lines
Quoted 4 lines
This is when devfs comes into its own, as the disks are refered to by their device/controller id not by the
/dev/sd{a,b,c,etc}numbering, hence when one fails the others don't change. Also I think the kernel autodetect code for scsi devices will deal with this case, but I'm not sure.'would be great to use driver name, e.g. something like
/dev/scsi/advansys/... (I don't remember devfs naming scheme)
Then you are back to the arguement about should the naming be based on the function of the device (scsi0,1,2 / eth0,1,2) or based on the hardware (aic7xxx0,1,2 advansys0,1,2 / tulip0,1,2 eepro0,1,2). *BSD uses this naming scheme for its ethernet interfaces, not sure about its scsi thou.
I prefer the functional naming scheme (scsi0 / eth0) as I can change the hardware in a machine and not change anything in the init scripts, assuming the driver is in kernel or if not I only need to change the line /etc/modules.conf.
Signature · 12 lines
Tim Fletcher - Network manager .~.
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